Ever since I started letting my 3 hens free range all day, their feed consumption has dropped considerably. While that's a good thing for my wallet, I worry that they're not getting enough of what they need to be good-sized birds and good layers. My backyard is very wooded - no grass to speak of and only a few weeds here and there. I guess they're getting enough to eat as they seem to forage non stop. Having happy birds is important to me but am worried they'll be skinny and poor layers. They're about 22 weeks right now. They have access to their feed (commercial + some homemade stuff) all day but definitely prefer foraging. Sounds crazy I know but should I be concerned about this? Or just have faith in "they know what they need"?